Vacuum apparatus.



H. VANDERHOOH VACUUM APPARATUS.

APPLICATION man JUNE 3, 19m.

Patented Mar. 27,1917.

Hllls UNITED STATES PATENT oEEIoE.

HAROLD VANDERHOOF, SAN FRANCISCO, CALIFORNIA.

. VACUUM APPARATUS.

v Specification of Letters Patent.

Patented Mar. 27, 1917.

Application led .Tune 3, 1916. Serial No. 101,516.

To all 'whom it may concern:

Be it known that I, HAROLD VANDERHOOF, a citizen of the United States, residing at No. 1283 Forty-second avenue, San Francisco, in the county of San Francisco and lState of California, have invented certain engine is utilized to create the vacuum, and

the apparatus is so constructed and arranged that it can be readily applied to the engine without any changes in the structure there' of, and without adecting the ordinary operation of the engine.

In order that the invention may be better understood, reference is had to the accompanying drawing in which- Figure 1 is an elevation showing the application of the invention, and Fig. 2 is a central vertical section of the dust strainer or separator. y

Referring speciiically to the dra-wing, 5 denotes an automobile or other motor vehicle having an ordinary multiple-cylinder, internal-combustion engine 6 provided with an intake manifold 7 through which the fuelcharges are conveyed to the engine cylinders from a carbureter 8. These parts are all constructed and arranged in the ordinary Inanner inview of which a further description thereof is deemed unnecessar'y. As is well known, the engine 6, when running,

creates a suction in the manifold 7, and this action is utilized for the operation of the present apparatus, which will now be de scribed.

On the dash 9 of the car, is mounted a cylindrical or other suitable casing 10 closed at one end by a removable screw cap 11, and having attached to its other end a valve 12,

the casing of which latter opens at one end into the casing 10, and has connected to its other end a tubing 13 leading to and having a connection with the intake manifold 7 at any convenient point between the carbureter 8 and the cylinder inlet ports. ln the casing 10, over the end of the valve casing opening thereinto, is mounted a fine-mesh screen 14.

The tubing 13 opens into the manifold 7, and hence, when the engine 6 is running, the suction created in said manifold will Withdraw air from the casing 10, thus producing a partial vacuum therein.

Gn the cap 11 is a nipple 15 for making connection with a flexible hose 16 of suitable length provided with an ordinary suction nozzle 17 such as is used in vacuum cleaning apparatus.

The casing 10 contains a fabric strainer bag 18 having its mouth located opposite the nipple 15, so that the dust-laden air entering through the nipple passes into the bag, and in passing through the meshes thereof, the air is strained, the dust particles remaining in the bag. The bag seats in a cylindrical screen 19 open at one end to receive the bag, the other end being closed and imperforate, as indicated at 20, this end-being opposite and adjacent to the screen 14 so that the -suction is thrown to the sides of the bag.

The bag is removably mounted in the casing so that it may be taken out and relieved of its contents, after taking ofi' the cap,

The upper end of the screen 19 is soldered or otherwise rigidly fastened in a sleeve 21 fitting snugly in the upper end of the casing 10 and resting at its lower end on an annular shoulder 22 inside the latter. The bag 18 is carried by a ring 23 to which it is sewed or otherwise made fast at its mouth. When the parts 18, 19 and 21 are positioned in the casing' 10, the sleeve 21 rests on the shoulder 22., and the ring 23 seats on the top edgeof the sleeve 21, the ring being So positioned that-when the cap 11 is screwed down it presses the mouth of the bag, reinforced by the ring, down on the top edge of the sleeve, this portion of the bag therefore acting as a washer, so that the cap 11 is sealed airtight.-

The apparatus can be cut ofi' from t-he engine by closing the valve 12.

It will be seen that the invention provides a handy and convenient automobile accessory for the purpose stated, and it can be easily applied, without any change in the structure of the car or its engine, and without affecting the ordinary operation of the engine. v

rl`he device also operates to save gasolene when the engine is running, by introducing an additional volume of clean filtered air into the fuel mixture as it passes through the manifold 7 to the engine cylinders. Thin additional air supply results in a more thorough Vaporization of the fuel, and has in actual practice been found to reduce the amount of fuel required, and also to add to the speed of the car.

I claim:

The combination with an internal-combustion engine and its intake manifold; of an air suction pipe connected to the intake manifold between vthe carbureter and the fuel inlets of the engine, anteriorly of the carbureter, a strainer clamber having an air inlet and an air outlet, the air outlet being connected to the aforesaid suction pipe, and a valve in the suction pipe.

In testimony whereof I aiix my signature in the presence of two Witnesses.

HAROLD VANDERHOOF.

Witnesses z F. E. FARMER, C. K. TOBIN. 

